The Pentagon's wacky sci-fi department DARPA has been working on robotic hummingbird-based drones to serve as miniature spies. They're not nearly as agile or adorable as real hummingbirds, but DARPA is well on their way to achieving that dream.

Program manager Todd Hylton is aiming for "an approximately 10-gram aircraft that can hover for extended periods, can fly at forward speeds up to 10 meters per second, can withstand 2.5-meter-per-second wind gusts." Right now, though, the teeny robobird can only fly for about 20 seconds at a time. But with some hard work, some day we will produce a robotic hummingbird that will strike fear into the hearts of our enemies. Wait, is fear the right word? [Wired]